from docker-dev:
Start storage server:
```
docker-compose down --volumes; SWH_SERVICE=swh-storage; docker-compose build $SWH_SERVICE; docker-compose up $SWH_SERVICE
```
Then in another shell:
```
docker-compose exec swh-storage bash -c 'ngrep -d lo udp and port 8125
```
Run some ingestion and check we see counters like the following:
```
U 127.0.0.1:39597 -> 127.0.0.1:8125
swh_storage_request_duration_seconds:0.003577995812520385|ms|#endpoint:get_storage
#
U 127.0.0.1:52223 -> 127.0.0.1:8125
swh_storage_request_count:1|c|#endpoint:snapshot_add
#
U 127.0.0.1:35545 -> 127.0.0.1:8125
swh_storage_request_duration_seconds:0.005665002390742302|ms|#endpoint:get_storage
#
U 127.0.0.1:39042 -> 127.0.0.1:8125
swh_storage_request_count:1|c|#endpoint:fetch_history_end
#
U 127.0.0.1:55143 -> 127.0.0.1:8125
swh_storage_request_duration_seconds:0.0034950062399730086|ms|#endpoint:get_storage
#
U 127.0.0.1:56208 -> 127.0.0.1:8125
swh_storage_request_count:1|c|#endpoint:origin_visit_update
#
U 127.0.0.1:58816 -> 127.0.0.1:8125
swh_storage_request_duration_seconds:0.003449007635936141|ms|#endpoint:get_storage
(swh2)
```
Also tox is fine for non regression.